I am brand new to Actionscript and this is one of my first "scripts" by myself so forgive me if this is obvious.
I have a movieclip with the name "Smiley"
and this is my actionscript in frame 1 of the actions layer
stage.addEventListener(MouseEvent.MOUSE_MOVE, mousePosition);
var smiley:MovieClip = addChild(new Smiley) as MovieClip; // **ERROR HERE**
stage.addEventListener(MouseEvent.MOUSE_DOWN,toggleSmiley);
stage.addEventListener(MouseEvent.MOUSE_UP,toggleSmiley);
function mousePosition(event:MouseEvent) {
smiley.x = mouseX; smiley.y = mouseY;
}
function toggleSmiley(e:MouseEvent):void
{
smiley.visible = (e.type == MouseEvent.MOUSE_DOWN);
}
See the line marked "ERROR HERE" above, thats where Flash is throwing the error.
I am getting this error:
Scene 1, Layer 'actions', Frame 1, Line 6 1180: Call to a possibly
undefined method Smiley.
Am confused as to where the problem is. Thanks in advance.
Your "Smiley" has not been linked for usage with ActionScript. It doesn't exist, as far as your script knows.
In the library, in "Smiley"'s Symbol Properties, check "Export for ActionScript".
In your library, you'll need to export your Smiley for Actionscript. Open up your library, select the square, and select the "properties" by right-clicking or cmd+clicking. Twirl down the "Advanced" section if it's not open already, then select "Export for Actionscript". In the "Class" field you should likely see the same name as it is in the library, "Smiley". This creates its own class which has the properties of the movie clip you designed in Flash.
Below this field, you'll see "Base Class", and it should have "flash.display.MovieClip". This means that your Smiley is already a movieclip, and it is just extended to be an extra special type now called Smiley, so you won't have to declare it as a MovieClip in your code when you instantiate it, because a Smiley is already a MovieClip.
Now go back to your actions, and you'll change the line you instantiate it with to:
var smiley:Smiley = new Smiley();
addChild(smiley);
In general, you want to call the constructor of a class first, ie: "new Smiley()", and then add it to the display list, rather than trying to do it all at once.
Related
I am learning about fluid dynamics (and Haxe) and have come across this awesome project and thought I would try to extend to it to help me learn. A demo of the original project in action can be seen here.
So far, I have created a side menu of items containing different shapes. When the user clicks on one of the shapes, then, clicks onto the canvas, the image selected should be imprinted onto the dye. The user will then move the mouse and explore the art etc.
To try and achieve this I did the following:
import js.html.webgl.RenderingContext;
function imageSelection(): Void{
document.querySelector('.myscrollbar1').addEventListener('click', function() {
// twilight image clicked
closeNav();
reset();
var image:js.html.ImageElement = cast document.querySelector('img[src="images/twilight.jpg"]');
gl.current_context.texSubImage2D(cast fluid.dyeRenderTarget.writeToTexture, 0, Math.round(mouse.x), Math.round(mouse.y), RenderingContext.RGB, RenderingContext.UNSIGNED_BYTE, image);
TWILIGHT = true;
});
After this call, inside the update function, I have the following:
override function update( dt:Float ){
time = haxe.Timer.stamp() - initTime;
performanceMonitor.recordFrameTime(dt);
//Smaller number creates a bigger ripple, was 0.016
dt = 0.090;//#!
//Physics
//interaction
updateDyeShader.isMouseDown.set(isMouseDown && lastMousePointKnown);
mouseForceShader.isMouseDown.set(isMouseDown && lastMousePointKnown);
//step physics
fluid.step(dt);
particles.flowVelocityField = fluid.velocityRenderTarget.readFromTexture;
if(renderParticlesEnabled){
particles.step(dt);
}
//Below handles the cycling of colours once the mouse is moved and then the image should be disrupted into the set dye colours.
}
However, although the project builds, I can't seem to get the image imprinted onto the canvas. I have checked the console log and I can see the following error:
WebGL: INVALID_ENUM: texSubImage2D: invalid texture target
Is it safe to assume that my cast for the first param is not allowed?
I have read that the texture target is the first parameter and INVALID_ENUM in particular means that one of the gl.XXX parameters are just flat out wrong for that particular function.
Looking through to the file writeToTexture is declared as so: public var writeToTexture (default, null):GLTexture;. WriteToTexture is a wrapper around a regular webgl handle.
I am using Haxe version 3.2.1 and using Snow to build the project. WriteToTexture is defined inside HaxeToolkit\haxe\lib\gltoolbox\git\gltoolbox\render
writeToTexture in gltoolbox is a GLTexture. With snow and snow_web, this is defined in snow.modules.opengl.GL as:
typedef GLTexture = js.html.webgl.Texture;
So we're simply dealing with a js.html.webgl.Texture here, or WebGLTexture in native JS.
Which means that yes, this is definitely not a valid value for texSubImage2D()'s target, which is specified to take one of the gl.TEXTURE_* constants.
A GLenum specifying the binding point (target) of the active texture.
From this description it's obvious that the parameter isn't actually for the texture itself - it merely gives some info on how the active texture should be used.
The question then becomes how the "active" texture can be set. bindTexture() can be used for this.
I have a Lua function where I build a table of value and attempt to add it to a global table with a named key.
The key name is pulled from the function arguments. Basically, it's a filename, and I'm pairing it up with data about the file.
Unfortunately, the global table always comes back nil. Here's my code: (let me know if you need to see more)
(Commented parts are other attempts, although many attempts have been deleted already)
Animator = Class{}
function Animator:init(atlasfile, stringatlasfriendlyname, totalanimationstates, numberofframesperstate, booleanstatictilesize)
-- Define the Animator's operation mode. Either static tile size or variable.
if booleanstatictilesize ~= false then
self.isTileSizeStatic = true
else
self.isTileSizeStatic = false
end
-- Define the total animation states (walking left, walking right, up down, etc.)
-- And then the total frames per state.
self.numAnimationStates = totalanimationstates or 1
self.numAnimationFrames = numberofframesperstate or 2
-- Assign the actual atlas file and give it a programmer-friendly name.
self.atlasname = stringatlasfriendlyname or removeFileExtension(atlasfile, 'animation')
generateAnimationQuads(atlasfile, self.atlasname, self.numAnimationStates, self.numAnimationFrames)
end
function generateAnimationQuads(atlasfile, atlasfriendlyname, states, frames)
spriteWidthDivider = atlasfile:getWidth() / frames
spriteHeightDivider = atlasfile:getHeight() / states
animationQuadArray = generateQuads(atlasfile, spriteWidthDivider, spriteHeightDivider)
animationSetValues = {atlasarray = animationQuadArray, width = spriteWidthDivider, height = spriteHeightDivider}
--gAnimationSets[#gAnimationSets+1] = atlasfriendlyname
gAnimationSets[atlasfriendlyname] = animationSetValues
--table.insert(gAnimationSets, atlasfriendlyname)
end
Note: when using print(atlasfriendlyname) and print(animationSetValues), neither are empty or nil. They both contain values.
For some reason, the line(s) that assign the key pair to gAnimationSets does not work.
gAnimationSets is defined a single time at the top of the program in main.lua, using
gAnimationSets = {}
Animator class is called during the init() function of a character class called Bug. And the Bug class is initialized in the init() function of StartState, which extends from BaseState, which simply defines dummy init(), enter(), update() etc. functions.
StartState is invoked in main.lua using the StateMachine class, where it is passed into StateMachine as a value of a global table declared in main.lua.
gAnimationSets is declared after the table of states and before invoking the state.
This is using the Love2D engine.
Sorry that I came here for help, I've been picking away at this for hours.
Edit: more testing.
Trying to print the animationQuadArray at the index gTextures['buganimation'] always returns nil. Huh?
Here's gTextures in Main.lua
gTextures = {
['background'] = love.graphics.newImage('graphics/background.png'),
['main'] = love.graphics.newImage('graphics/breakout.png'),
['arrows'] = love.graphics.newImage('graphics/arrows.png'),
['hearts'] = love.graphics.newImage('graphics/hearts.png'),
['particle'] = love.graphics.newImage('graphics/particle.png'),
['buganimation'] = love.graphics.newImage('graphics/buganimation.png')
}
Attempting to return gTextures['buganimation'] returns a file value as normal. It's not empty.
My brain is so fried right now I can't even remember why I came to edit this. I can't remember.
Global table in Main.lua, all other functions can't access it.
print(gTextures['buganimation']) works inside the function in question. So gTextures is absolutely accessible.
Table isn't empty. AnimationSetValues is not empty.
I'm adding second answer because both are correct in context.
I ended up switching IDE's to VS Code and now the original one works.
I was originally using Eclipse LDT with a Love2D interpreter and in that environment, my original answer is correct, but in VS Code, the original is also correct.
So Dimitry was right, they are equivalent, but something about my actual Eclipse setup was not allowing that syntax to work.
I switched to VS Code after I had another strange syntax problem with the interpreter where goto syntax was not recognized and gave a persistent error. The interpreter thought goto was the name of a variable.
So I switched, and now both things are fixed. I guess I just won't use LDT for now.
Solution: Lua syntax. Brain Fry Syndrome
I wrote:
animationSetValues = {atlasarray = animationQuadArray, width = spriteWidthDivider, height = spriteHeightDivider}
Should be:
animationSetValues = {['atlasfile']=atlasfile, ['atlasarray']=animationQuadArray, ['width']=spriteWidthDivider, ['height']=spriteHeightDivider}
Edit: I'm fully aware of how to use answers. This was posted here to reserve my spot for an answer so I could edit it later when I returned back home, which is exactly what I'm doing right now. I'll keep the old post for archival purposes.
Original:
I solved it. I apologize for not posting the solution right now. My brain is melted into gravy.
I will post it tomorrow. Just wanted to "answer" saying no need to help. Solved it.
Solution is basically, "oh it's just one of those Lua things". Wonderful. I'm having so much fun with this language - you can tell by my blank expression.
From the language without line endings or brackets, but forced print parentheses... ugh. I'm going back to C# when this class is done.
i choose to ask a question here well aware that i can infringe some rules of StackExchange maybe becouse this isn't the right place to ask that, but i saw a lot of question related to CERN ROOT. I know that here people that answer the questions prefer to show the way instead to give a cooked solution, but i need some help and i have no time to learn from the answers, i only want a solution for my problem. I apologize in advance!
Here is my problem: i have two .root files:
one of a spectrum ("sezione_misura_90.root"),
one from background ("sezione_fondo_90.root").
I have to subtract the second from the first and get a final histogram. Usually i open the file with the TBroswer and i have no idea how to implement a macro of a script to open a .root file or doing everything else, first of all becouse i hate ROOT and all programming related, and i have only a course where i am supposed to use that, without someone tell me how!!! Even the prof. don't know how to use...
If some one that read have a macro or a script ready to use, I will be forever indebted to him for sharing that with me. Thanks in advance!
EDIT
I write down a file named run.cxx with the following lines
int run()
{
// Open both files side-by-side
TFile* sezione_misura_90 = new TFile("sezione_misura_90.root");
TFile* sezione_fondo_90 = new TFile("sezione_fondo_90.root");
// Get the histograms from the file
// Since you didn't say from your post, I'm going to assume that
// the histograms are called "hist" and that they hold floating
// point values (meaning, they're TH1F histograms. The "F" means float)
TH1F* h_misura = (TH1F*) sezione_misura_90->Get("hist");
TH1F* h_fondo = (TH1F*) sezione_fondo_90->Get("hist");
// Now we add them together
TH1F* h_sum = h_misura->Add(*h_fondo, -1);
}
There was some typos like ( and ;, i correct them but i get back the following.
Error: illegal pointer to class object h_misura 0x0 139 run.cxx:21:
** Interpreter error recovered **
A simple way to accomplish this is to write a script that opens the two files, reads the histograms from the files, and subtracts them (which is the same as adding them using a factor of -1). This can be done using a block of code similar to the following:
{
// Open both files side-by-side
TFile* sezione_misura_90 = new TFile("sezione_misura_90.root");
TFile* sezione_fondo_90 = new TFile(("sezione_fondo_90.root");
// Get the histograms from the file
// Since you didn't say from your post, I'm going to assume that
// the histograms are called "hist" and that they hold floating
// point values (meaning, they're TH1F histograms. The "F" means float)
TH1F* h_misura = (TH1F*) sezione_misura_90->Get("hist");
TH1F* h_fondo = (TH1F*) sezione_fondo_90->Get("hist");
// Now we add them together
TH1F* h_sum = h_misura->Add(*h_fondo, -1);
}
At this point, h_sum should be the histogram you want. You can save it to a file for later reading, or you can draw it to the screen if you're running an interactive root session.
The above code can be run by doing one of the following:
An interactive root session just by typing root and then typing the above lines)
As a root script (by pasting them into a file which, for example, could be named "file.C" and typing "root file.C")
A larger program (by putting the above lines in a function and calling that function)
You can read more about the methods available for a Histogram in ROOT's documentation:
http://root.cern.ch/root/html/TH1.html#TH1:Add#1
Hope that helps.
I see at least two problems. One problem has to do with the way ROOT manages memory, more specifically ROOT objects in memory:
// Each ROOT object derives from a TNamed class,
// hence has a <name>, which ROOT uses internally
// to keep track of the objects
TH1F* h_misura = (TH1F*) sezione_misura_90->Get("hist");
// now you have a histogram named "hist" in memory;
//btw, better to name it something more unique, e.g. hist1, at least
TH1F* h_fondo = (TH1F*) sezione_fondo_90->Get("hist");
// And now, you are trying to get another histogram named "hist",
// which creates a problem: Two different histograms with the same
// name - you can't do that.
// At the very least ROOT is going to overwrite the first hist
// and replace it with the second, or bug out
Solution to problem one:
// Rename the "hist"s to something like "hist1" and "hist2"
TH1F* h_misura = (TH1F*) sezione_misura_90->Get("hist");
h_misura->SetName("hist1");
TH1F* h_fondo = (TH1F*) sezione_fondo_90->Get("hist");
h_fondo->SetName("hist2");
// now, you have to histograms in memory with unique names
Problem two: when you open a TFile with
// TFile * f = new TFile("file.root");
it opens it in a read-only mode, therefore you can't write to them if you want to save your sum of histograms. Instead do this:
TFile * f = TFile::Open("file.root", "write");
// and do a null pointer check
if (!f) { std::cout << "file not found" << std::endl; exit(1); }
// if you want to save the results to file f
// ...
f->cd();
hist->Write();
f->Close();
i have two volumes (.nrrd) of different qualities. the user can browse through the layers. if a key is pressed
i want to load the slice of the volume with better quality.
my volume is similar to this one: lesson 10 xtk
i've found:
volume.children[2].children[0].children[0].texture.file = "http://path/to/file.ext";
but if i apply some kind of file (.jpg, .dcm) nothing happens.
is this the right approach to change the slice to go inside the children and change the texture?
or shall i load the selected slice seperate as an object and apply it to the "lower-quality-volume" somehow?
edit:
this is what i tried so far (i get errors with dcms but not with jpgs):
if (event.keyCode == 83) { // "s"-button
volume.children[2].children[0].children[0].texture.file = "http://localhost:3000/112.jpg";
volume.children[2].children[0].children[0].modified();
r.render();
}
edit2: this is whats in my r.onShowtime = function() {}
volume.children[2].children[0].texture.file = 'http://localhost:3000/112.jpg';
volume.children[2].children[0].visible = true; // to activate the first layer
volume.children[2].children[0].modified();
console.log(volume.children[2].children[0].visible +" "+ volume.children[2].children[0].texture.file);
it outputs "true hostname/112.jpg"
when i inspect the .jpg in firebug the header is ok but the answer is "null"
when i inspect console.log(volume.children[2].children[0]); with firebug
.texture.file is set to hostname/112.jpg
when i go to "network" the .jpg has been transfered successfully
please notice that 112.jpg and level.jpg are the same. the first one is getting loaded in r.onShowtime and the other one is loaded at a keypressed event.
EDIT 3: volume.children[2].children[0] is of the type "X.slice", isn't it?
here is my approach: jsFiddle
and this is my actual issue and still not working: jsFiddle
Mhh..
I think a call to object.modified() is missing in the file setter (and in others setters from inject classes). Let's see when Haehn will come if he wants to change something internaly, but for the moment could you try to call it by yourself ?
You can try to add after the modification of texture :
volume.children[2].children[0].children[0].modified();
And if it doesn't work, in addition :
renderer.render();
Edit :
It's strange, I did a similar code and it did something. Can you please try something like that with opening your javascript console (Firefox, Chrome,... has one) and tell me the error you get ?
renderer.onShowtime = {
for (var i=0 ; i< volume.children[2].children.length ; i++) {
volume.children[2].children[i].texture.file="myimage.jpeg";
volume.children[2].children[i].modified();
}
}
It is important you call it in the onShowtime, because before the volume is not loaded, and so slicesX, slicesY... don't exist.
Edit2 :
Hey,
Thanks to the informations you added I think I've got the point ! In the render() method of our renderer3D there is a test on texture._dirty flag, that you cannot change from outside the framework. In addition the 1st rendering with a texture make that flag false, and loading a new texture doesn't seem to set that flag back to true in the current XTK. So, I think, we have to add it in the loader.load(texture, object) method. I'll make an issue on Github and see what Haehn thinks of it !
I'm pretty inexperienced with actionscript, and I'm having the hardest time trying to figure out how to load variables from a file and send it to a dynamic text box.
The content of an external file, "varload.txt", is "name1=John".
Here is actionscript of my flash file:
myVars = new LoadVars();
myVars.onLoad = function(){
trace(this.name1); //prints "John" as expected
myname=this.name1;
}
myVars.sendAndLoad("varload.txt", myVars);
mytextbox.text=myname; //undefined
I'm guessing it's a scope issue, but I can't find much online about global variables in actionscript, so I'm not sure how to fix this.
How do I get mytextbox.text to equal John?
The issue is that onLoad is asynchronous (called once the file has loaded, not immediately).
You'll have to define the text within the onLoad function:
myVars = new LoadVars();
myVars.onLoad = function()
{
mytextbox.text = this.name1;
}
myVars.sendAndLoad("varload.txt", myVars);
With your code, you're trying to set the content of the text box to being data that doesn't exist / hasn't loaded yet.